Combined pull and key socket.



No. 847,939. A PATENTED MAR. 19,1907. J. H. HANSON.

COMBINED PULL AND KEY SOCKET.

APPLICATION FILED JULY 16, 1906.

mmem

Uh ilTED STATES PATENT OFFICE.

. JoIIN II. HANSON, or CHICAGO, ILLINOIS.

COMBINED PULL AND KEY SOCKET.

tion.

My invention relatesto improvements in combined pull and key sockets for electric lamps, and has for its salient object to provide a socket which may be operated either through the instrumentality of the usual turning key or through the instrumentality of a pull-cord.

Another object of my invention is to provide'a construction of the character described wherein the parts may be embodied in the area afforded in ordinary key-socket constructionso that fittings of standard size may be employed.

A further object of my invention is to provide a construction involving the smallest possible number of parts in simple and effective arrangement.

Other and furtherobjects of my invention will'become apparent to those skilled in the art from the following description, taken in conjunction with the accompanying drawing, wherein Figure lis" a central vertical section of a socket embodying my, invention. Fig. 2 is a section on line 2 2 of Fig. 1. Fig. 3 is a sectional detail of the actuating mechanism, and Fig. 4 is a-sectional detail on line 4. 4 of Fig. 1.

Throughout the drawing like numerals of reference refer always to like parts. v In thedrawing, indicates in. dotted lines a socket-shell, which is preferably of the usual or'standard size and configuration and provides in suitable position an aperture 11 for the pull-cord. 12 indicates the usual insulating-b ase, to which are secured frame-pieces 13 ,14, the latter provided with an elongated bearingrslot 15 to receive one end of the actuatin -shaft 16',the opposite end of which is journa ed in the frame member :13. The

usual oblong snap-switch contact head or member 17 ls-secured to the shaft 16 in the usual manner by a pin 18 passing through the shaft and taking into enlarged apertures 19 in the contact-head, said contact-head being mounted adjacent the end tearing 14 of the shaft.- From said contact-head, there projects inwardly an integral sleeve 18, carrying integral "positive clutch m b a Specification of Letters Patent.

Application filedll'nly 16,1906- Serial No. 326,330-

socket.

Patented March 19, 1907. I

ing four crown-teeth orserrations 20. Coacting with the clutch member 19 is a toothed loose clutch member 21 freely rotatable and axially movable upon the shaft 16, said member 21 having secured thereto a pullcord 22, which partially surrounds the periphery of the clutch memberand is adapted I when pulled to rotate said'clutch member in such direction'that its teeth coacting' with the teeth 20 serve to rotate the contact head 17. a For returning the movable clutch mem ber 21 to normalposition I provide a helical torsion-spring 23 at one end secured to the movableclutch member-and at its other end secured .to the frame member 13. Thus the single, sprin acts both as a return-spring and as a'means or holding the clutch member 21 normally in" eng ement' with the clutch" member 19, secure f'to the contact-head.

24 indicatesa leaf-spring arranged in en'- eral parallelism to the shaft 16, at one en .se-'

cured to the frame member 13 and at its 0 po site extremity bearing constantly upon t e contact-head 17. Thus the spring 24 acts as a contact member for said contact-head and also as a'nieans for etc in the movements of the, manually-operahl e cl tch member 21 in proper position.

The lamp-contacts are, as usual, provided when it stands with its greater diameter in by a center contact 26, connected to the exterior wiring in any usual way. The circuit leg to be controlled by the contact-head 17 is connected with the exterior wiring by attachment ofv the outside wire to frame memher 13, so that the shaft and clut'chmechanisms are not depended upon to form any part of the circuit.

' 27 indicates a finger-key threaded. tothe shaft .in such manner that it jwillKbe 'unscrewed if the shaft be sou ht to. be rotated in, a direction oppositev to t at which'it is moved by the operation. of: the pull-cord. Thus it will be seen that my device may be used either as a pull-socket or as a key- The operation of the device will be obvious. ber.21,. to-which the cord is attached, is re As the cord is pulled the clutch mem-' .85' I by the threaded shell 25, with which-the contact-head 17 makes electrical connection tated, carrying with it the clutch member 19,

so that the contact-head 17 is turned, and

This turning of the head changes the condition of the circuit in the usual manner..

Now as the pull-cord is released the spring 23 returns the manually-operable clutch member 21 toward initial position, yielding said spring axially to permit the requisite axial,

movement of the clutch member, so that the teeth of the actuating clutch member21 move back one tooth with respect to the clutch member 19 and rengage the last said member for further operation.

Having thus described my invention, what I claim, and desire to-secure by Letters Patent of the United States is 1. In a combined pull and key socket, the combination of a contact-head, an actuatingshaft for said contact-head, a finger-key upon said shaft, a clutch member operativelyassociated with the contact-head to move the lat ter, an actuating clutch member rotatable and axially movable on the shaft, and a cord connected directly with said actuating clutch member and arranged when pulled to rotate said clutch member.

2. In a device of the character described,

a base,fa transverse shaft, a contact head mounted-for rotation with the shaft, a sleeve,

integral with said contact-head, a -cluteh member carried by said sleve, an operatin coacting-clutch member, mounted on said shaft, and a spring 23 surrounding the shaft secured to said operating clutch member, and apull-cord, secured to said operating clutch member. I

3. ,In a device of the character described,

the combination of, an insulating-base, frame members-thereon, a transverse shaft mounted in said. frame members, an oblong contacthead having its longer sides flat carried by said transverse shaft, a sleeve integral with senses said contact-head, a clutch member integral with said sleeve, a coactmg clutch. member, a

cord secured to said eoacting clutch member positions, a clutch member assotiated for rotation with the contact-head, a reacting clutch member loose on the actuating-shaft, a spring normally holding the loose clutch member in engagement with the first said clutch member and in definite position of rotary movement; and a cord connected to the loose clutch member and arranged to rotate said. member in direction to move the opposing clutch member when pulled, said cord extending at substantial right angles to the actuating-shaft through the aperture in the shell, whereby apull upon said cord in any direction with respect to the shell functionally operates th eparts to advance the contact head-to the next position.

In testimony whereof I hereunto set my hand in the presence of two \vitnesses.

JOHN nl HANSON.

In presence of- Giro.- T. Manda,

MARY F. ALLEN. 

